Electronic collars (also known as E-collars) transmit a remote signal from a control device the handler operates to the collar. An electrical impulse is transmitted by the handler remotely, at varying degrees of intensity, from varying distances depending on range frequency. It is also done automatically in the bark electronic collar to stop excessive barking, and invisible fence collar when the dog strays outside its boundary. Electronic collars are widely used in some areas of the world and by some dog obedience professionals. This technique remains a source of controversy with many dog training associations, veterinary associations and kennel clubs.[6]

Step one of each run is the walkthrough. If you’ve ever been to an agility trial and seen a group of people walking around in the ring with one arm out and muttering commands to an invisible dog, you’ve just witnessed the walkthrough portion of the trial. These people may look three fries short of a Happy Meal, but they’re actually hard at work memorizing the course and plotting out how they will run it.
Clicker training, a common form of positive reinforcement, is a simple and effective dog training method. Although it is still fine to train your dog without clicker training, many people find it helpful. With clicker training, you can easily and effectively teach your dog all kinds of basic and advanced commands and tricks. It's fast and easy to learn how to clicker train your dog